Hand-press.



no. 693,050. 'A f" Patented Feb. |902.

- J. MuBnncK, m. f

HAND PRESS.

(Application med-:Augr V20, 1900.)

(No Model.)

W WMM' UNUSED STATES ATSENT Orti-cn.

JAMES MURDOOK, JR., OF CINCINNATI, OHIO.

HAND-PRESS.

SPECIFICATION ibrming part of Letters Patent N o. 693,050, datedFebruary 11, 1902.

Application filed August 20l 1900. Serial No. 27,41@ (N0 mpdel.)

To all whom t may concern:

Be it known that I, JAMES MURDOCK, Jr., a citizen of the United States,residing at Cincinnati, in the county of Hamilton and State of Ohio,have invented certain new and useful Improvements in Hand-Presses, ofwhich the following is a specification.

My invention relates to improvements in hand-presses of any kind, and Ihave for the purpose of illustrating their operation and use shown apress as specially adapted for metallic seals.

Some of the objects of my invention are to provide a press capable ofexerting more pressure than those heretofore in use, to provide alighter and` more convenient press to operate, to provide a press moresimple and inexpensive to construct and more durable and easily repairedthan those heretofore in use, to provide a press for sealing in whichthe. seal is compressed into a zigzag form to prevent tampering with theseal, and to provide a press of compact form for convenience in carryingin the pocket.

My invention consists in the novel features of the several parts and inthe construction,

combination, and arrangement of the same,

whereby certain important Vadvantages are secured and the device isrendered simple, eective, and cheap and otherwise better adapted andmore convenient for use, all as will be hereinafter fully set forth.

The novel features of the invention will be carefully defined in theclaims.

I n the accompanying drawings,which serve to illustrate my invention,Figure l is a central vertical section through my improved press,showing the operative parts in elevation in the retracted position. Fig.2 is an enlarged detail view of the operative parts in the extendedposition. Fig. 3 is a section on line 'a ,a of Fig. 2. Fig. 4 isaperspective View of one of the links composing the togglejoint. Fig. 5is a perspective view of the toggle-joint shield. Fig. 6 is a sideelevation of the abutment-block. Fig. 7 is a side elevation of themovable press member. Fig. Sis a perspective View of the seal afterbeing pressed. v

A represents the frame of the press, the

Vrear end of which is extended out into a handlever B. O represents theopposite handlever, which is pivoted to the frame at Dand provided witha cam or Wiper face E, which engages the central portion of thetogglejoint G, one'endH of which is connected by a socket-hinge to theremovable abutmentblock I, while the other end H is sockethinged to therear end of the movable press member J, which is adapted to slide in thebody of the press.

KY represents links pivoted, respectively, to the center F and to thesides of the Wiper or cam E for the purpose only of bending thetoggle-joint and retracting the movable press member when the hand-leverC drops down v or open, the Whole force in closing the press membersbeing between the Wiper-face and the central portion of the toggleWithout regard to the links at all, the pivot connecting the links andthe wiper taking into a hole in the Wiper, which is large enough torelieve the links of any pressure When the wiperface engages withthecentral portion of the toggle to close the press members. 'Thestationary press member L is adjustable in its socket to or from themovable press member by means of the screw M to regulate the extent ofimpression or squeeze of seal.v

N represents a set-screw the point of which enters a longitudinal slotin the side of the stationary press member to hold the same in alinementand lock and hold it rigid when adjusted and set. The abutment-block isheld in place in the frame by means of the l pin O.

The foregoing stationary press member, movable press member, andabutment-block -are preferably made round andV of the same diameter totit a horizontally-reamedl openin g through body of press in which theyhave their position, the interior portion of the press being bored orreamed with a straight drill or reamer, thereby simplifying the work offitting. The toggle-joint is built up, as shown in Fig. 3, of theindividual links P, (see Fig. 4,) several of which are strung upon thecentral pivot F Vand with the extending arms of the alternate linksstrung upon the pivot-pins Q R. These extended ends, when seated in therecesses T U in the abutmentblock and press member, form sockethingejoints therewith. The two outside links K, which may be of the sameform as the' links IOO lgle out straight and closing the dies.

P, are pivoted at their outer ends to the Wiper E for the purposeheretofore set forth. The shield W, Fig. 5, is also held in place andjournals upon the pivot-pin Q and serves as a shield to protect theWiper-face and links and may be readily replaced when Worn. The faces ofthe press member are cut-the one With a tongue 3 and the other Withagroove /t-so as to press the seal into an irregular or zigzag form, asshown in Fig. 8, bending the sealing-cords therein in such a manner asto make it impossible to withdraw the cords from the seal endwise. Thepress member .I is also undercut at 2, so as to draw the metal of theseal into the press instead of forcing it out at the sides. The metal isforced toward the center, because the undercutinclines inwardly or hasWalls tapering to form a Wedgeshaped space to receive the same, and themetal will ow under pressure toward the center to fill this spaceinstead of outwardly.

When the press is closed and in a horizontal position, with its openingor mouth on the upper side, the toggle-joint is elongated, as shown inFig. 2, and the center of the toggle being fastened to the lever-handle,which in dropping by its own Weight or gravity contracts the toggle, andthereby separates the dies of the press, as shown in Fig. l, thus doingaway with all springs. When the press is in operation, the lever-handleis pulled up and brought close to stationary handle. In so doing the camor lever handle is brought into operation against the shield coveringthe center of the toggle, thereby forcing the tpg- When the impressionis completed, the handle is let fall, which separates the dies ready forthe next sealing.

To take the press apart, all that is necessary is to take out pins O andD, extending through body of press, and set-screw N, which holdsstationary die. Y

The toggle-joint is securely housed and protected from injury bythe-pressframe, and the whole is compactly and conveniently arranged,and by the system of compound levers which I employ I secure verypowerful pressure by very slight effort.

The mouth is on one side of the pressand the swinging handle on theopposite side of the press, so as to not interfere with the introductionof work into the press, and thereby allowing the press to be broughtvery close to the work.

From the above description it will be obvious that the device is capableof some modieeaoso vfication without material departure from the scopeof my invention, and for this reason I do not wish to be understood aslimiting myself to the precise form and arrangement'of the several partsas herein set forth.

Having described my invent-ion, what I claim is- 1. In a hand-press, astationary handle and frame, the latter having a mouth on one side toreceive the material to be pressed, and a movable handle secured tc thestationary handle and frame on the side opposite said mouth, astationary press member, a movable press member, a removableabutment-block, a toggie-joint and a link, all housed Within said frame,said link connecting the toggle to the movable handle whereby the pressmember is extendedv and retracted, and so arranged that the handle willremain closed when desired, substantially` as and for the purpose setforth.

2. In a hand-press, a stationary press member, a movable press member,an abutmentblock, a toggle-joint, a pivoted wiper, and a shieldinterposed between said toggle-joint and pivoted Wiper.

3. In a hand-press, in combination With a stationary press member; amovable press member, and an abutment-block; a togglejoint composed of aseries of links, the eX- tended arms of alternate links being strungupon separate pivots and entering sockets in the abutment-block andmovable press member respectively, substantially as specified.

4. Ina hand-press, in combination with a stationary press member; amovable press member; and an abutment-block; a togglejoint composed of aseries of separate link members strung upon a central pivot; part of theextending arms of said links engaging the abutment-block, the movablepress memher and the wiper, substantially asspecied.

5. In a hand-press a movable press member and an abutment-block, eachhaving' in one end thereof a transverse cylindrical concavity providedwith a mouth or opening smaller than the diameter of said concavity, anda cylindrical boss upon each end of a jointed connection adapted to takeinto said concavity and be held in pivotal and axial engagement with theWalls thereof, substantially as set forth and for the purpose specified.

JAMES MURDOCK, JR.

Witnesses:

LUKE S. MURDooK, JAMES N. RAMsEY.

IOO

